IEC_TR_61340-1-2020.pdf

IEC TR 61340-1 Edition 1.1 2020-06 CONSOLIDATED VERSION TECHNICAL REPORT Electrostatics Part 1:Electrostatic phenomena Principles and measurements IEC TR 61340-1:2012-06+AMD1:2020-06 CSV(en)colourinside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2020 IEC,Geneva,Switzerland All rights reserved.Unless otherwise specified,no part of this publication may be reproduced or utilized in any form or by any means,electronic or mechanical,including photocopying and microfilm,without permission in writing from either IEC or IECs member National Committee in the country of the requester.If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,please contact the address below or your local IEC member National Committee for further information.IEC Central Office Tel.:+41 22 919 02 11 3,rue de Varemb infoiec.ch CH-1211 Geneva 20 www.iec.ch Switzerland About the IEC The International Electrotechnical Commission(IEC)is the leading global organization that prepares and publishes International Standards for all electrical,electronic and related technologies.About IEC publications The technical content of IEC publications is kept under constant review by the IEC.Please make sure that you have the latest edition,a corrigendum or an amendment might have been published.IEC publications search-webstore.iec.ch/advsearchform The advanced search enables to find IEC publications by a variety of criteria(reference number,text,technical committee,).It also gives information on projects,replaced and withdrawn publications.IEC Just Published-webstore.iec.ch/justpublished Stay up to date on all new IEC publications.Just Published details all new publications released.Available online and once a month by email.IEC Customer Service Centre-webstore.iec.ch/csc If you wish to give us your feedback on this publication or need further assistance,please contact the Customer Service Centre:salesiec.ch.Electropedia-www.electropedia.org The worlds leading online dictionary on electrotechnology,containing more than 22 000 terminological entries in English and French,with equivalent terms in 16 additional languages.Also known as the International Electrotechnical Vocabulary(IEV)online.IEC Glossary-std.iec.ch/glossary 67 000 electrotechnical terminology entries in English and French extracted from the Terms and definitions clause of IEC publications issued between 2002 and 2015.Some entries have been collected from earlier publications of IEC TC 37,77,86 and CISPR.TECHNICAL REPORT Electrostatics Part 1:Electrostatic phenomena Principles and measurements INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 17.220.99;29.020 ISBN 978-2-8322-8521-3 Registered trademark of the International Electrotechnical Commission Warning!Make sure that you obtained this publication from an authorized distributor.IEC TR 61340-1 Edition 1.1 2020-06 CONSOLIDATED VERSION colourinside IEC TR 61340-1 Edition 1.1 2020-06 REDLINE VERSION Electrostatics Part 1:Electrostatic phenomena Principles and measurements IEC TR 61340-1:2012-06+AMD1:2020-06 CSV(en)colourinside 2 IEC TR 61340-1:2012+AMD1:2020 CSV IEC 2020 CONTENTS 1 Scope.7 2 Normative references.7 3 Terms and definitions.8 4 Fundamentals of static electricity.10 4.1 General.10 4.2 Contact electrification.11 4.3 Charging by induction.12 4.4 Charge transfer by conduction.13 4.5 Retention of charge.13 4.6 Influence of environmental humidity.15 4.6.1 General.15 4.6.2 In situ measurements.15 4.7 Electrostatic discharges.15 4.7.1 General.15 4.7.2 Spark discharges.15 4.7.3 Corona discharges.16 4.7.4 Brush discharges.16 4.7.5 Propagating brush discharges.16 4.7.6 Cone discharges.17 4.8 Mechanical forces in an electrostatic field.17 5 Electrostatic problems and hazards.18 5.1 General.18 5.2 Electronic components and systems.18 5.2.1 General.18 5.2.2 Types of failure.18 5.2.3 Problems and threats at different life cycle periods.19 5.3 Electrostatic ignition Hazards.20 5.3.1 General.20 5.3.2 Spark discharges from conducting objects.20 5.3.3 Corona discharges from conducting objects.20 5.3.4 Brush discharges from insulating surfaces.20 5.3.5 Propagating brush discharges from insulating surfaces.21 5.3.6 Discharges from people.21 5.3.7 Ignition potential of electrostatic discharges.21 5.4 Physiological sensation.23 5.5 Simulation of electrostatic discharges.24 5.5.1 General.24 5.5.2 Capacitive discharges for ignition energy measurements.25 5.5.3 Human body model.25 5.5.4 Machine model.25 5.5.5 Charged device model.25 6 General solutions to problems and hazards.26 6.1 General.26 6.2 Common approaches.26 7 Useful applications of electrostatic effects.27 8 General aspects of measurements.28 IEC TR 61340-1:2012+AMD1:2020 CSV 3 IEC 2020 8.1 General.28 8.2 Electric field.28 8.2.1 General.28 8.2.2 Application.29 8.3 Potential.29 8.3.1 General.29 8.3.2 Surface voltage.30 8.3.3 Space potential.30 8.4 Charge.31 8.5 Charge density.31 8.5.1 Surface charge density.31 8.5.2 Volume charge